Something Grinding
Thread Starter
Instructor
Joined: Jan 2007
Posts: 157
Likes: 0
From: Austin TX
Something Grinding
Ive got a 99 coupe. When I got the car, there was a leak in the rear differential, but was fixed.
Whenever I take hard turns it sounds like something on my rear axile is grinding together. Is it the differential???? Something else?
Whenever I take hard turns it sounds like something on my rear axile is grinding together. Is it the differential???? Something else?
Racer
Joined: Dec 2005
Posts: 431
Likes: 0
From: North Las Vegas Nevada
If you were to drain the rear end, it would take 1.69 quarts of gear oil & 4 ounces of limited slip additive. Or you can do the easy route, like I did today, & use Amsoil's Severe gear oil 75W-90 weight. This oil needs no additive. The fill plug on the rear end faces the rear of the car & the drain plug is on the bottom. Fill to the bottom edge of the fill hole. I bought a hand pump from Amsoil for like $10. Did the job beautifully in about half an hour. Both plugs get torqued to 26 lbs. Afterwards, do some tight, slow circles in both directions, going forwards & reverse. This will work the gear oil into the clutches in the rear end. good luck!!
Last edited by allmee; Jun 13, 2007 at 01:02 AM.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
What you are experiencing may be differential "chatter"... or it could be something more serious. You can read a little about this on the AMSOIL Slip Lock Additive link below.
As mentioned by allmee above, the AMSOIL Severe Gear 75w90 mentioned above already includes the friction modifier though they do sell the modifier for situations such as yours, if you chose to add modifier to your existing fluid vice changing out the fluid.
Here is more info on the applicable products:
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90
AMSOIL Hand Pump
AMSOIL Slip-Lock Differential Additive
As mentioned by allmee above, the AMSOIL Severe Gear 75w90 mentioned above already includes the friction modifier though they do sell the modifier for situations such as yours, if you chose to add modifier to your existing fluid vice changing out the fluid.
Here is more info on the applicable products:
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90
AMSOIL Hand Pump
AMSOIL Slip-Lock Differential Additive
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C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
